Gate-actuating mechanism



D. S. BAIN GATE ACTUATING MECHANISM. APPLICATION FILED JUNE la, 1921..

D. S. BAIN.

GATE AcTuATlNG MECHANISM.

APPLICATION FILED JUNE18, 1921.

Patented oct. 17, 1922 2 SHEETS-SHEET 2.

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stares halma@ DAVID SYM BAN, NORDEGG, ALBERTA., CANADA.

GATE-ACTUATING MECHANISIVI.

Application filed .Tune 18, 1921. Serial No.478,577.

To all whom t may con/ocra.'

Be it known that l, DAVID S. BArN,`a subject of the King of fGreat Britain, residing at Nordegg, in the Province of Alberta, Canada, have invented certain new and useful Improvements in Gate-Actuating Mechanisms; and l do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable 'others skilled in the art to which it appertains to make and use the same.

The present invention relates to new and useful improvements in a gate actuating mechanism used particularly in mines for opening and closing the gate in front of and in advance of the mine cars. s

The primary object of the invention is the provision of a mechanism whereby a gate will be opened or closed upon the passage of amine car through the mine shaft,

Another object of the invention is the provision of a gate actuating mechanism, including` pivoted presser rails for engaging with the car wheels of a mine car when passing through the shaft along the track whereby upon the depression of said members, the gates will be swung to open position and after the car passes, the gates will be automatically closed, by means of suitable weights connected with the said mechanism.

Still another object of the invention is the provision of novel means for mounting the gates within the mine shaft and automatically moving` them to open and closed positions upon the passage of a car therethrough.

A. still further object of the invention is the provision of an apparatus such as above referred to which will be comparatively simple and inexpensive to manufacture, reliable and efiicient in use and readily operated.

l/Vith the above and other objects in view, the present invention resides in the novel features of construction, formation, combination and arrangement of parts to be hereinafter more fullv described, claimed and illustrated in the accompanying drawing, forming a part of the present application; and in which,

Figure 1 is a vertical longitudinal sectional view talen through a portion of a mine shaft showing the invention positioned. therein;

yshowing` the gatein plan view;

.Figure 7 -is a detail view illustrating the drum; i

Figure 8 is an end view of one of the presser rails; and, n

`Figure 9 is a view showing the meeting ends thereof. i 1

Referring now to the accompanying drawings by corresponding` characters of reference throughout .the several views, the numerallO designates in general a mine shaft, which is provided with the usual brace Vbeams 11 and across the lower side of which extend the usual ties 12 ,upon which the track rails 13 mounted.

fil he gates are shown at 14C and are mounted in a suitable frame including` the vertical members 15` and horizontal members 16 and 17 the latter of which are provided with recesses 18 near their outer ends, in which the pivotal or hinging members v19 of the said gates 1li are located, thus providing for the proper swinging of the said gates from closed to open position.

Springs shown at 19 serve to normally hold the gates in closed position as shown in Figure 2.

A. transversely extending presser bar 2O is pivoted as at 21 to one side of the track adjacent one of the rails 13 and has connected t0 its free end an attaching clip 22 to which a cable 23 is connected.

The cable 23 passes over a pulley 27 attached to a bracket 28 carried by the brace beams 11 and after passing over the pulley is connected to a longitudinally movable rod 28 to which is attached a cable which is wound around the minor portion 29 of the drum 25, which also has a major portion 26 formed thereon.

A cable 30 passes over the major portion of the drum 25 and has attached at one end thereof a Weight 3l for a purpose to be later explained. The intermediate portion of this cable operates a pulley 32 and is then attached to one of the gates as shown at 33. A separate cable 84k passes over a pulley 85 and is attached at its opposite ends to the inner' ends of the gates as shown in. Fig-- ure 2. f

It will thus be obvious that upon the depression of the member 2O the cable 23 will be pulled downwardly, thus moving the rod 28 to the left, as shown in Figure 2' and pulling the gates inv opposite directions, t0 open position. y

In order to operate the pressergbar 20 suitable channel presser' rails, shown at 36, are pivoted at their outer ends at 37 to points adjacent the rails 13'. y

rlhe meeting ends of these members 36 are provided with depending eyes 37 which pass between the rods SYS-carried by ya frame 39 secured to the upper side of thebar 20;

` The members 36l Work in suitable yguides 40 which may be attached to the ties and which will prevent spreading of the said channel presser rails.

As is shown in the dra-'Wings the meeting ends of thesebars are raised as clearly shown in Figure and the channel members are so arranged adjacent the rails, that the wheels of the car vwill engage the same and force them downward-ly during its passage through the shaft, thus opening` the gates which will be au-tomaticallg7 closed behind the car by the Weight 31, as the car passes through and the Wheels leave the railsv 36.

It shouldfbel further mentioned that the end of the presserbar 2O to Whichthe cable 23 is connected is of such distance from the members 36 that a slight downward movement thereof Will give a consequent greater movement to its free end, thus permitting of the necessary and desired movement of the gates, to open or closed positions.

From the foregoing description taken in connection With the accompanying drawings, it Will be manifest that a gate operating mechanism for mine shafts is provided, which will fulfil all of the necessary requirements of such a device and it should be understood in this connection that various minor changes in the speciic details of construction can be resorted to Within thescope of the appended claim, Withoutdeparting from' the spirit or sacrificing any of the ad.- vantages of the invention.

Havingthus fully described thelinventioni,

what l claim as new and desire to protect by Letters Patent is:

In amine shaft having a track located therein gates closing said mine shaft, means for pivotally supporting the gates, a drum having minor and major sections, aftransversely extending presser bar, presser rails pivoted at theifr` outer ends to the track', and at their inner ends to the presser bar for depressing the latter upon the passage of a car therover, a cable attached tothe presser bar and pivotally connected to the minor portion of th-edrum, and a cable passes over the major portion-'0f the drum, a weight at# tached to one end of the` cable, and ,the opposite end of the cablie attached toone of said gates and asecond cable connecting the gates together whereby upon the opening and'closing of one of the gates, theL other gate will be opened andclosed a Weight attached? to one of said cables for return-ing the gates to closed position;

In' Witness whereof I have 'hereunto set my hand.l

havin` s-YM reninK 

